Help recoloring sheets and shams white

if you have seasons I suggest these that are similar:
although using the paint canister is fine, it will also be great if you use the saturation tone option because the texture of the canister is lost
(in my opinion)
this: hue and saturation once it is selected
but if what you say is white it is better to use the brightness and contrast option
Also in my opinion you are doing steps of more

when there are always easier ways

but good that goes more with your way of recolor n.n
maybe this also helps you

although I do not know

I use .dds not png


oh do not wait I think you're trying to recolor the seasons xD

this?
with paint can


bright and contrast opcion:

Sorry to fill you with so much information ...